From: Sunil Kumar Kori <sk...@marvell.com>

Implement API to delete meter instance for CN10K platform.

Signed-off-by: Sunil Kumar Kori <sk...@marvell.com>
---
 drivers/net/cnxk/cn10k_ethdev_mtr.c | 82 +++++++++++++++++++++++++++++
 1 file changed, 82 insertions(+)

diff --git a/drivers/net/cnxk/cn10k_ethdev_mtr.c 
b/drivers/net/cnxk/cn10k_ethdev_mtr.c
index dbf74249c7..6b19e34361 100644
--- a/drivers/net/cnxk/cn10k_ethdev_mtr.c
+++ b/drivers/net/cnxk/cn10k_ethdev_mtr.c
@@ -8,6 +8,10 @@
 #define NIX_MTR_COUNT_MAX      73 /* 64(leaf) + 8(mid) + 1(top) */
 #define NIX_MTR_COUNT_PER_FLOW 3  /* 1(leaf) + 1(mid) + 1(top) */
 
+static const enum roc_nix_bpf_level_flag lvl_map[] = {ROC_NIX_BPF_LEVEL_F_LEAF,
+                                                     ROC_NIX_BPF_LEVEL_F_MID,
+                                                     ROC_NIX_BPF_LEVEL_F_TOP};
+
 static struct rte_mtr_capabilities mtr_capa = {
        .n_max = NIX_MTR_COUNT_MAX,
        .n_shared_max = NIX_MTR_COUNT_PER_FLOW,
@@ -391,6 +395,83 @@ cn10k_nix_mtr_create(struct rte_eth_dev *eth_dev, uint32_t 
mtr_id,
        return 0;
 }
 
+static int
+cn10k_nix_mtr_destroy(struct rte_eth_dev *eth_dev, uint32_t mtr_id,
+                     struct rte_mtr_error *error)
+{
+       struct cnxk_eth_dev *dev = cnxk_eth_pmd_priv(eth_dev);
+       struct roc_nix_bpf_objs profs = {0};
+       struct cn10k_mtr *fm = &dev->mtr;
+       struct roc_nix *nix = &dev->nix;
+       struct cn10k_flow_meter *mtr;
+       int rc = 0;
+
+       mtr = nix_mtr_find(dev, mtr_id);
+       if (mtr == NULL) {
+               return -rte_mtr_error_set(error, ENOENT,
+                                         RTE_MTR_ERROR_TYPE_MTR_ID, &mtr_id,
+                                         "Meter id is invalid.");
+       } else {
+               if (!mtr->ref_cnt) {
+                       switch (lvl_map[mtr->level]) {
+                       case ROC_NIX_BPF_LEVEL_F_LEAF:
+                               if (mtr->is_next) {
+                                       rc = roc_nix_bpf_connect(nix,
+                                               ROC_NIX_BPF_LEVEL_F_LEAF,
+                                               mtr_id,
+                                               ROC_NIX_BPF_ID_INVALID);
+                               }
+                               break;
+                       case ROC_NIX_BPF_LEVEL_F_MID:
+                               if (mtr->is_prev) {
+                                       rc = roc_nix_bpf_connect(nix,
+                                               ROC_NIX_BPF_LEVEL_F_LEAF,
+                                               mtr->prev_id,
+                                               ROC_NIX_BPF_ID_INVALID);
+                               }
+                               if (mtr->is_next) {
+                                       rc = roc_nix_bpf_connect(nix,
+                                               ROC_NIX_BPF_LEVEL_F_MID, mtr_id,
+                                               ROC_NIX_BPF_ID_INVALID);
+                               }
+                               break;
+                       case ROC_NIX_BPF_LEVEL_F_TOP:
+                               if (mtr->is_prev) {
+                                       rc = roc_nix_bpf_connect(nix,
+                                               ROC_NIX_BPF_LEVEL_F_MID,
+                                               mtr->prev_id,
+                                               ROC_NIX_BPF_ID_INVALID);
+                               }
+                               break;
+                       default:
+                               return -rte_mtr_error_set(error, EINVAL,
+                                                 RTE_MTR_ERROR_TYPE_MTR_ID,
+                                                 NULL, "Invalid meter level");
+                       }
+
+                       if (rc)
+                               goto exit;
+
+                       profs.level = mtr->level;
+                       profs.count = 1;
+                       profs.ids[0] = mtr->bpf_id;
+                       rc = roc_nix_bpf_free(nix, &profs, 1);
+                       if (rc)
+                               goto exit;
+
+                       TAILQ_REMOVE(fm, mtr, next);
+                       plt_free(fm);
+               } else {
+                       return -rte_mtr_error_set(error, EADDRINUSE,
+                                                 RTE_MTR_ERROR_TYPE_MTR_ID,
+                                                 &mtr_id, "Meter id in use.");
+               }
+       }
+
+exit:
+       return rc;
+}
+
 const struct rte_mtr_ops nix_mtr_ops = {
        .capabilities_get = cn10k_nix_mtr_capabilities_get,
        .meter_profile_add = cn10k_nix_mtr_profile_add,
@@ -399,6 +480,7 @@ const struct rte_mtr_ops nix_mtr_ops = {
        .meter_policy_add = cn10k_nix_mtr_policy_add,
        .meter_policy_delete = cn10k_nix_mtr_policy_delete,
        .create = cn10k_nix_mtr_create,
+       .destroy = cn10k_nix_mtr_destroy,
 };
 
 int
-- 
2.25.1

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